Abstract: A method is disclosed of producing a carbonated beverage for example a soft drink, which method comprises dispensing into a sealable receptacle a predetermined amount of a liquid flavor extract, adding to said receptacle an appropriate portion of yeast; fermentable sugar and an amount of water to provide suitable dilution of said flavor extract, and permitting the receptacle to stand so as to effect fermentation by the yeast and consequently production of a carbonated soft drink. Control reagents are incorporated in the liquid flavor extract to provide a suitable "bite" in the eventual beverage and to cause termination of fermentation when the pH drops to a certain level. The method affords a simple means of producing soft drink beverages in small or large quantities in the home.